#ifndef __KANJIMEMORY_H__
#define __KANJIMEMORY_H__

#include <stdlib.h>
#include <stdint.h>

#if defined(_DEBUG) && !defined(KANJI_MEMTRACE)
#define KANJI_MEMTRACE
#endif

#ifdef WIN32
#pragma warning(disable : 4595)
#endif

//////////////////////////////////////////////////////////////////////////
//                      HOW TO USE THIS FILE
//
//          In the desired .CPP file (NOT header file), AFTER ALL of your
//  #include declarations, do a #include "KMemory.h" or whatever you renamed
//  this file to. It's very important that you do it only in the .cpp and
//  after every other include file, otherwise it won't compile.  The memory leaks
//  will appear in a file called mem_leaks.txt and they will also be printed out
//  in the output window when the program exits.
//
//////////////////////////////////////////////////////////////////////////

#ifndef SAFE_DELETE
#define SAFE_DELETE(pPtr) { if(pPtr) delete pPtr; pPtr = 0; }
#endif

#ifndef SCOPED_AUTO_SAFE_DELETE

template<typename T>
class ScopedAutoDeletePointerHelper {
public:
	ScopedAutoDeletePointerHelper(T pPtr) : _pPtr(pPtr) {}

	~ScopedAutoDeletePointerHelper() {SAFE_DELETE(_pPtr); }

	T _pPtr;
};

#define SCOPED_AUTO_SAFE_DELETE(p) ScopedAutoDeletePointerHelper<decltype(p)> anAutoDelete##p(p);
#endif

#ifndef SAFE_DELETE_ARRAY
#define SAFE_DELETE_ARRAY(pPtr) { if(pPtr) delete [] pPtr; pPtr = 0; }
#endif

extern void KMemoryDumpUnfreed();

extern size_t KMemoryAllocated();

#ifdef WIN32
#define KMEM_CALLTYPE __cdecl
#else
#define KMEM_CALLTYPE
#endif

#ifdef __APPLE__
#define KMEM_THROWSPEC throw(std::bad_alloc)
#define KMEM_THROWS_BADALLOC

#include <new>

#else
#define KMEM_THROWSPEC
#endif

#if defined(KANJI_MEMTRACE)

/////////////////////////////////////////////
// DO NOT CALL THESE TWO METHODS DIRECTLY  //
/////////////////////////////////////////////

extern void KMemoryAddTrack(void *addr, size_t asize, const char *fname, int lnum);

extern void KMemoryRemoveTrack(void *addr);

//Replacement for the standard malloc/free, records size of allocation and the file/line number it was on
inline void *_kanjimalloc(size_t size, const char *file, int line) {
	void *ptr = (void *) malloc(size);
	KMemoryAddTrack(ptr, size, file, line);
	return (ptr);
}

inline void *_kanjimalloc(size_t size) {
	return _kanjimalloc(size, "", 0);
}

inline void _kanjifree(void *ptr) {
	KMemoryRemoveTrack(ptr);
	free(ptr);
}

inline void *_kanjirealloc(void *ptr, size_t size, const char *file, int line) {
	void *ptr2 = (void *) realloc(ptr, size);
	if (ptr2) {
		KMemoryRemoveTrack(ptr);
		KMemoryAddTrack(ptr2, size, file, line);
	}
	return ptr2;
}

inline void *_kanjirealloc(void *ptr, size_t size) {
	return _kanjirealloc(ptr, size, "", 0);
}

#define kanjimalloc(size) _kanjimalloc((size), __FILE__, __LINE__)
#define kanjifree _kanjifree
#define kanjirealloc(ptr, size) _kanjirealloc(ptr, size, __FILE__, __LINE__)

//Replacement for the standard "new" operator, records size of allocation and the file/line number it was on
inline void *KMEM_CALLTYPE operator new(size_t size, const char *file, int line) {
	void *ptr = (void *) malloc(size);
	KMemoryAddTrack(ptr, size, file, line);
	return (ptr);
}

//Same as above, but for arrays
inline void *KMEM_CALLTYPE operator new[](size_t size, const char *file, int line) {
	void *ptr = (void *) malloc(size);
	KMemoryAddTrack(ptr, size, file, line);
	return (ptr);
}


// These single argument new operators allow vc6 apps to compile without errors
inline void *KMEM_CALLTYPE operator new(size_t size) KMEM_THROWSPEC {
	void *ptr = (void *) malloc(size);
#ifdef KMEM_THROWS_BADALLOC
	if (!ptr) throw std::bad_alloc();
#endif
	return (ptr);
}

inline void *KMEM_CALLTYPE operator new[](size_t size) KMEM_THROWSPEC {
	void *ptr = (void *) malloc(size);
#ifdef KMEM_THROWS_BADALLOC
	if (!ptr) throw std::bad_alloc();
#endif // KMEM_THROWS_BADALLOC
	return (ptr);
}


//custom delete operators
inline void KMEM_CALLTYPE operator delete(void *p) throw() {
	KMemoryRemoveTrack(p);
	free(p);
}

inline void KMEM_CALLTYPE operator delete[](void *p) throw() {
	KMemoryRemoveTrack(p);
	free(p);
}

//needed in case in the constructor of the class we're newing, it throws an exception
inline void KMEM_CALLTYPE operator delete(void *pMem, const char *file, int line) {
	free(pMem);
}

inline void KMEM_CALLTYPE operator delete[](void *pMem, const char *file, int line) {
	free(pMem);
}

#define KDEBUG_NEW new(__FILE__, __LINE__)
#define new KDEBUG_NEW

#else // KANJI_MEMTRACE NOT DEFINED

#define kanjimalloc malloc
#define kanjifree free
#define kanjirealloc realloc

inline void* _kanjimalloc(size_t size) { return malloc(size); }
inline void  _kanjifree(void* ptr) { free(ptr); }
inline void* _kanjirealloc(void* ptr, size_t size) { return realloc(ptr, size); }

#endif // KANJI_MEMTRACE

#endif // __KANJIMEMORY_H__